this spring break me and my brother started playing black ops 2 local split screen again and we were having frame rate issues with it. it looks way better playing solo, but slows down when there is alot of zombies around. this also happens on black ops 1 and in gta 4 when i crash a car or something intense, xbox seems to be slowing down. this didnt happen back in november when we got the game (black ops 2). also when we are in the middle of the frame rate laggy game I press the guide button and it comes up all laggy. i've tried installing the game to the hd and clearing cache and removing my hd but no luck. does anyone know why this is happening? or how to fix it? id really appreciate all help possible.